CD109 and glioblastoma: In particular, BCAN, GRIA2, MEG10, PCDH10, PCDH15, PMP2 and SEMA5A transcripts were found at least twice more abundant in the HD-type GBM cell cultures with respect to the NL-type whereas the CD109 transcript was found down-regulated in HD-type with respect to NL-type GBM cell cultures as expected (Figure4).